How can Trump and Clinton win the final debate?

Hillary Clinton hasn't made any campaign stops since Friday, and Donald Trump is holding rallies in Wisconsin and Colorado.

Clinton's staffers said the Democrat has been preparing for the third and final presidential debate, as the Republican presidential nominee continues to promise large crowds that he'll make America great again.

They followed these same patterns before the first two debates, but they will need to change course Wednesday night if they want to win the last parley.

"Trump has to broaden his base beyond the white, working class if he wants to get elected," said Terry Madonna, veteran political analyst and pollster at Franklin & Marshall College. "He won't get that by doubling down on Clinton insults."

The last month of the campaign has gone "off the rails," Madonna said.

Before the last debate, Trump held a press conference with women who accused Bill Clinton of sexual assault. Since then, he has accused Hillary Clinton of being on drugs and Saturday Night Live of rigging the election.

The Democratic nominee has been responding to his charges with a line from Michelle Obama's convention speech, "When they go low, we go high."

Both presidential candidates continue to face scandals stirring their campaigns. Trump is still managing the fallout of a bombshell report from The Washington Post that revealed a video of him bragging about groping women and making uninvited sexual advances. The Clinton campaign is facing questions about emails, collusion, and blurred lines between her public and private lives.

Though Trump hasn't lost his core group of supporters during the most tumultuous three weeks of his campaign, he will need more than 40 percent of the electorate to win the White House. There's more at stake for the GOP nominee in the third debate.

Clinton, still viewed by many as a flawed candidate, has a 7-point lead in the RealClearPolitics average of polls.

"Trump has more to prove in the third debate. He has to reassure voters about his judgment and temperament," Madonna said.

The Republican nominee also has to offer a more sincere apology for his comments on women, Madonna said.

"He has to look the camera in the eye and say 'I'm honestly sorry. I want to tell you that's not who I am,' and ask for forgiveness," Madonna said. "Do I think that's what will happen? I have no clue what he's likely to do, and neither does anyone else. Expect the unexpected."

Regardless if Trump apologizes or not, Clinton needs to avoid talking about his scandal and focus on laying out her agenda for the country, analysts said.

"She needs to be less risky in her strategy and talk about her policies," said Chris Borick, political scientist at Muhlenberg College. "Clinton finds herself in a really good position three weeks out from the election."

Trump is in a very daunting situation, on the other hand.

"He has a lot of ground to make up in increasingly less time," Borick said.

The worst thing Trump could do is show up and act in a bombastic manner, he said.

"Trump always takes the aggressor stance, but being aggressive for him is very risky," Borick.

There's a risk in letting "Trump be Trump," said Kyle Kopko, a political scientist from Elizabethtown. "With Trump, you're not sure which one will show up."

Clinton needs to hold her lead and focus on policy issues, he said.

Most of the first two debates focused on personalities and pasts, as opposed to policy issues, Madonna said.

It seems moderator Chris Wallace, the host of Fox News Sunday, is trying to change that for the third debate. He said his questions will focus on six issues during the debate at 9 p.m. Wednesday: debt and entitlements, immigration, economy, Supreme Court, foreign hot spots and fitness to be president.

"It could be an opportunity for the candidates to talk about issues like the national debt," Kopko said. "But it's probably going to focus more on tactics and whether the election is truly rigged."

Regardless of what is said Wednesday night, analysts say it's unlikely to sway voters.

"In the past three presidential elections, whoever was winning the polls three weeks out ended up winning the election," Madonna said. "Debates do more to solidify existing support than win new voters."